To relieve the tail current effect of insulated-gate bipolar transistors which are preferred in high-power applications, an approach of zero-current-switching (ZCS) for main switches is presented in this paper. Different from the large turn-off current of the main switches of the conventional zero-voltage and zero-current-switching (ZVZCS) full-bridge (FB) dc-dc converter, small turn-off current of auxiliary circuit is introduced to achieve ZCS for main switches, where the auxiliary circuit also delivers a small portion power and can realize ZVZCS. Hence, high efficiency can be achieved with the switching loss lowered remarkably. Furthermore, a hybrid resonant FB dc-dc converter is proposed, the operation principle and parameters design rules of which are analyzed in detail. A 200 V-2 kV/3 kW experimental platform has been built to verify the feasibility and performance of the proposed ZCS approach, as well as the proposed converter.
No takes yet. Share an insight, caveat, or question.
Ning et al. (2018) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: